The model "BOX" is, without doubt the stairs for interior design: with its box-like structure in sheet metal elbow, completely walkable, is, at the same time, simple and important, but essential ideal for modern environments.
Glass as side protection is undoubtedly the best choice to not interfere with the rhythmic line of risers and treads; depending on the needs, it is however possible to combine different railing solutions.
The metal (steel or painted steel) is the only material that characterizes the design of mod stairs. "BOX": Nevertheless, the wide variety of colors and / or achievable finishes can differentiate and make every single scale.